Wind cup



FIG. 1 is a front elevation view of a wind cup showing my new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevation view thereof;

FIG. 6 is an opposite side elevation view thereof; and,

FIG. 7 is an elevation view thereof, shown in environmental use.

The broken lines in FIG. 7 showing an assembled wind cup generator represents unclaimed subject matter and forms no part of the claimed design. 

The ornamental design for a wind cup, substantially as shown and described. 